./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Primes.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/Primes.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 02:55:34,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 02:55:34,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 02:55:34,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 02:55:34,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 02:55:34,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 02:55:34,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 02:55:34,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 02:55:34,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 02:55:34,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 02:55:34,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 02:55:34,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 02:55:34,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 02:55:34,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 02:55:34,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 02:55:34,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 02:55:34,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 02:55:34,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 02:55:34,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 02:55:34,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 02:55:34,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 02:55:34,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 02:55:34,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 02:55:34,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 02:55:34,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 02:55:34,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 02:55:34,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 02:55:34,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 02:55:34,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 02:55:34,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 02:55:34,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 02:55:34,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 02:55:34,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 02:55:34,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 02:55:34,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 02:55:34,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 02:55:34,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 02:55:34,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 02:55:34,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 02:55:34,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 02:55:34,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 02:55:34,752 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 02:55:34,770 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 02:55:34,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 02:55:34,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 02:55:34,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 02:55:34,772 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 02:55:34,772 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 02:55:34,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 02:55:34,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 02:55:34,773 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 02:55:34,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 02:55:34,773 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 02:55:34,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 02:55:34,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 02:55:34,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 02:55:34,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 02:55:34,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 02:55:34,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 02:55:34,775 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 02:55:34,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 02:55:34,775 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 02:55:34,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 02:55:34,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 02:55:34,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 02:55:34,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 02:55:34,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:55:34,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 02:55:34,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 02:55:34,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 02:55:34,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 02:55:34,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 02:55:34,777 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 02:55:34,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 02:55:34,778 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 02:55:34,778 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 02:55:34,778 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 02:55:34,778 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e [2023-02-16 02:55:34,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 02:55:35,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 02:55:35,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 02:55:35,021 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 02:55:35,022 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 02:55:35,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Primes.c [2023-02-16 02:55:36,255 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 02:55:36,473 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 02:55:36,474 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Primes.c [2023-02-16 02:55:36,481 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f176496d3/da6ba3a5ebd749629af21e16cad9d72a/FLAGa6ddd9a54 [2023-02-16 02:55:36,504 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f176496d3/da6ba3a5ebd749629af21e16cad9d72a [2023-02-16 02:55:36,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 02:55:36,510 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 02:55:36,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 02:55:36,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 02:55:36,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 02:55:36,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:55:36" (1/1) ... [2023-02-16 02:55:36,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b1f017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:36, skipping insertion in model container [2023-02-16 02:55:36,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:55:36" (1/1) ... [2023-02-16 02:55:36,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 02:55:36,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 02:55:36,758 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Primes.c[2190,2203] [2023-02-16 02:55:36,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:55:36,773 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 02:55:36,793 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Primes.c[2190,2203] [2023-02-16 02:55:36,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:55:36,806 INFO L208 MainTranslator]: Completed translation [2023-02-16 02:55:36,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:36 WrapperNode [2023-02-16 02:55:36,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 02:55:36,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 02:55:36,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 02:55:36,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 02:55:36,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:36" (1/1) ... [2023-02-16 02:55:36,833 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:36" (1/1) ... [2023-02-16 02:55:36,855 INFO L138 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2023-02-16 02:55:36,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 02:55:36,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 02:55:36,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 02:55:36,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 02:55:36,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:36" (1/1) ... [2023-02-16 02:55:36,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:36" (1/1) ... [2023-02-16 02:55:36,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:36" (1/1) ... [2023-02-16 02:55:36,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:36" (1/1) ... [2023-02-16 02:55:36,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:36" (1/1) ... [2023-02-16 02:55:36,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:36" (1/1) ... [2023-02-16 02:55:36,889 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:36" (1/1) ... [2023-02-16 02:55:36,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:36" (1/1) ... [2023-02-16 02:55:36,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 02:55:36,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 02:55:36,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 02:55:36,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 02:55:36,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:36" (1/1) ... [2023-02-16 02:55:36,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:55:36,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:36,925 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-16 02:55:36,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-16 02:55:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure multiple_of [2023-02-16 02:55:36,972 INFO L138 BoogieDeclarations]: Found implementation of procedure multiple_of [2023-02-16 02:55:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 02:55:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2023-02-16 02:55:36,972 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2023-02-16 02:55:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure is_prime_ [2023-02-16 02:55:36,975 INFO L138 BoogieDeclarations]: Found implementation of procedure is_prime_ [2023-02-16 02:55:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 02:55:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 02:55:36,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 02:55:37,031 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 02:55:37,035 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 02:55:37,391 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 02:55:37,404 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 02:55:37,407 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-16 02:55:37,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:55:37 BoogieIcfgContainer [2023-02-16 02:55:37,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 02:55:37,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 02:55:37,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 02:55:37,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 02:55:37,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 02:55:36" (1/3) ... [2023-02-16 02:55:37,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2acf94fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:55:37, skipping insertion in model container [2023-02-16 02:55:37,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:55:36" (2/3) ... [2023-02-16 02:55:37,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2acf94fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:55:37, skipping insertion in model container [2023-02-16 02:55:37,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:55:37" (3/3) ... [2023-02-16 02:55:37,420 INFO L112 eAbstractionObserver]: Analyzing ICFG Primes.c [2023-02-16 02:55:37,437 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 02:55:37,437 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 02:55:37,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 02:55:37,509 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@292c2757, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 02:55:37,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 02:55:37,514 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 39 states have internal predecessors, (56), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-16 02:55:37,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-16 02:55:37,522 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:37,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:37,524 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:37,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:37,531 INFO L85 PathProgramCache]: Analyzing trace with hash 691245353, now seen corresponding path program 1 times [2023-02-16 02:55:37,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:37,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173162139] [2023-02-16 02:55:37,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:37,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:37,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:37,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 02:55:37,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:37,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173162139] [2023-02-16 02:55:37,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173162139] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:55:37,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:55:37,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 02:55:37,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302206235] [2023-02-16 02:55:37,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:55:37,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 02:55:37,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:37,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 02:55:37,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 02:55:37,872 INFO L87 Difference]: Start difference. First operand has 52 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 39 states have internal predecessors, (56), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 02:55:37,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:37,940 INFO L93 Difference]: Finished difference Result 58 states and 80 transitions. [2023-02-16 02:55:37,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 02:55:37,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-02-16 02:55:37,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:37,951 INFO L225 Difference]: With dead ends: 58 [2023-02-16 02:55:37,952 INFO L226 Difference]: Without dead ends: 49 [2023-02-16 02:55:37,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 02:55:37,960 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 0 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:37,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:55:37,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-02-16 02:55:38,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-02-16 02:55:38,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-16 02:55:38,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 66 transitions. [2023-02-16 02:55:38,008 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 66 transitions. Word has length 15 [2023-02-16 02:55:38,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:38,010 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 66 transitions. [2023-02-16 02:55:38,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 02:55:38,011 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 66 transitions. [2023-02-16 02:55:38,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-16 02:55:38,015 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:38,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:38,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 02:55:38,016 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:38,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:38,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1873142352, now seen corresponding path program 1 times [2023-02-16 02:55:38,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:38,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845045080] [2023-02-16 02:55:38,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:38,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:38,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:38,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:38,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-16 02:55:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:38,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 02:55:38,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:38,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845045080] [2023-02-16 02:55:38,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845045080] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:55:38,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:55:38,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-16 02:55:38,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216963099] [2023-02-16 02:55:38,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:55:38,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 02:55:38,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:38,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 02:55:38,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-16 02:55:38,246 INFO L87 Difference]: Start difference. First operand 49 states and 66 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:55:38,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:38,342 INFO L93 Difference]: Finished difference Result 71 states and 93 transitions. [2023-02-16 02:55:38,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 02:55:38,345 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2023-02-16 02:55:38,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:38,348 INFO L225 Difference]: With dead ends: 71 [2023-02-16 02:55:38,349 INFO L226 Difference]: Without dead ends: 51 [2023-02-16 02:55:38,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-02-16 02:55:38,352 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 4 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:38,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 365 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:55:38,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-16 02:55:38,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-02-16 02:55:38,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 38 states have internal predecessors, (49), 9 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-02-16 02:55:38,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2023-02-16 02:55:38,365 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 22 [2023-02-16 02:55:38,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:38,365 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2023-02-16 02:55:38,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:55:38,366 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2023-02-16 02:55:38,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-16 02:55:38,370 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:38,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:38,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 02:55:38,371 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:38,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:38,372 INFO L85 PathProgramCache]: Analyzing trace with hash 2039437329, now seen corresponding path program 1 times [2023-02-16 02:55:38,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:38,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761501569] [2023-02-16 02:55:38,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:38,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:38,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:38,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:38,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-16 02:55:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:38,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 02:55:38,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:38,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761501569] [2023-02-16 02:55:38,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761501569] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:55:38,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:55:38,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 02:55:38,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502626336] [2023-02-16 02:55:38,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:55:38,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 02:55:38,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:38,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 02:55:38,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-16 02:55:38,523 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 02:55:38,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:38,565 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2023-02-16 02:55:38,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 02:55:38,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-02-16 02:55:38,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:38,567 INFO L225 Difference]: With dead ends: 57 [2023-02-16 02:55:38,568 INFO L226 Difference]: Without dead ends: 53 [2023-02-16 02:55:38,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-16 02:55:38,569 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 5 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:38,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 244 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:55:38,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-16 02:55:38,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-02-16 02:55:38,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 40 states have internal predecessors, (50), 9 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-02-16 02:55:38,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 71 transitions. [2023-02-16 02:55:38,579 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 71 transitions. Word has length 23 [2023-02-16 02:55:38,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:38,580 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 71 transitions. [2023-02-16 02:55:38,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 02:55:38,580 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 71 transitions. [2023-02-16 02:55:38,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-16 02:55:38,583 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:38,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:38,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-16 02:55:38,584 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:38,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:38,584 INFO L85 PathProgramCache]: Analyzing trace with hash -502167403, now seen corresponding path program 1 times [2023-02-16 02:55:38,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:38,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948068370] [2023-02-16 02:55:38,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:38,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:38,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:38,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-16 02:55:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:38,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 02:55:38,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:38,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948068370] [2023-02-16 02:55:38,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948068370] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:55:38,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:55:38,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 02:55:38,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749298194] [2023-02-16 02:55:38,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:55:38,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 02:55:38,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:38,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 02:55:38,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 02:55:38,675 INFO L87 Difference]: Start difference. First operand 53 states and 71 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 02:55:38,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:38,745 INFO L93 Difference]: Finished difference Result 59 states and 78 transitions. [2023-02-16 02:55:38,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 02:55:38,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-02-16 02:55:38,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:38,747 INFO L225 Difference]: With dead ends: 59 [2023-02-16 02:55:38,750 INFO L226 Difference]: Without dead ends: 55 [2023-02-16 02:55:38,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-16 02:55:38,752 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 9 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:38,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 209 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:55:38,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-02-16 02:55:38,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2023-02-16 02:55:38,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 40 states have internal predecessors, (50), 9 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-02-16 02:55:38,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 71 transitions. [2023-02-16 02:55:38,772 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 71 transitions. Word has length 24 [2023-02-16 02:55:38,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:38,773 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 71 transitions. [2023-02-16 02:55:38,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 02:55:38,773 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 71 transitions. [2023-02-16 02:55:38,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-16 02:55:38,775 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:38,775 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:38,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-16 02:55:38,776 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:38,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:38,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1717699423, now seen corresponding path program 1 times [2023-02-16 02:55:38,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:38,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67136765] [2023-02-16 02:55:38,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:38,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:38,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:38,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:38,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-16 02:55:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:38,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:55:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:38,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 02:55:38,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:38,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67136765] [2023-02-16 02:55:38,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67136765] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:55:38,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260422962] [2023-02-16 02:55:38,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:38,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:38,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:38,981 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:55:38,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 02:55:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:39,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 02:55:39,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:55:39,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 02:55:39,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:55:39,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 02:55:39,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260422962] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:55:39,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:55:39,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2023-02-16 02:55:39,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614862518] [2023-02-16 02:55:39,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:55:39,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 02:55:39,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:39,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 02:55:39,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-02-16 02:55:39,283 INFO L87 Difference]: Start difference. First operand 53 states and 71 transitions. Second operand has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-16 02:55:39,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:39,385 INFO L93 Difference]: Finished difference Result 68 states and 90 transitions. [2023-02-16 02:55:39,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 02:55:39,386 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 31 [2023-02-16 02:55:39,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:39,387 INFO L225 Difference]: With dead ends: 68 [2023-02-16 02:55:39,387 INFO L226 Difference]: Without dead ends: 51 [2023-02-16 02:55:39,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2023-02-16 02:55:39,390 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 26 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:39,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 373 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:55:39,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-16 02:55:39,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-02-16 02:55:39,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 39 states have internal predecessors, (47), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-02-16 02:55:39,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2023-02-16 02:55:39,397 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 31 [2023-02-16 02:55:39,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:39,398 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2023-02-16 02:55:39,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-16 02:55:39,398 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2023-02-16 02:55:39,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-16 02:55:39,400 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:39,400 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:39,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 02:55:39,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:39,607 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:39,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:39,609 INFO L85 PathProgramCache]: Analyzing trace with hash 380831863, now seen corresponding path program 1 times [2023-02-16 02:55:39,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:39,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567510016] [2023-02-16 02:55:39,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:39,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:39,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:39,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-16 02:55:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:39,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:55:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:39,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 02:55:39,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:39,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567510016] [2023-02-16 02:55:39,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567510016] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:55:39,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294288856] [2023-02-16 02:55:39,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:39,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:39,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:39,913 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:55:39,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 02:55:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:39,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-16 02:55:39,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:55:40,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 02:55:40,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:55:40,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 02:55:40,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294288856] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:55:40,427 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:55:40,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2023-02-16 02:55:40,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928218895] [2023-02-16 02:55:40,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:55:40,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-16 02:55:40,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:40,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-16 02:55:40,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2023-02-16 02:55:40,431 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 23 states, 20 states have (on average 2.35) internal successors, (47), 17 states have internal predecessors, (47), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-02-16 02:55:40,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:40,724 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2023-02-16 02:55:40,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-16 02:55:40,728 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.35) internal successors, (47), 17 states have internal predecessors, (47), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 32 [2023-02-16 02:55:40,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:40,731 INFO L225 Difference]: With dead ends: 71 [2023-02-16 02:55:40,732 INFO L226 Difference]: Without dead ends: 54 [2023-02-16 02:55:40,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2023-02-16 02:55:40,735 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 68 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:40,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 424 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:55:40,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-02-16 02:55:40,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2023-02-16 02:55:40,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 39 states have internal predecessors, (44), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-02-16 02:55:40,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2023-02-16 02:55:40,750 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 32 [2023-02-16 02:55:40,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:40,751 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2023-02-16 02:55:40,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.35) internal successors, (47), 17 states have internal predecessors, (47), 7 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-02-16 02:55:40,752 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2023-02-16 02:55:40,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-16 02:55:40,756 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:40,756 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:40,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 02:55:40,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-02-16 02:55:40,963 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:40,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:40,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1826216781, now seen corresponding path program 1 times [2023-02-16 02:55:40,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:40,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622554315] [2023-02-16 02:55:40,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:40,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:41,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:41,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-16 02:55:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:41,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:55:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:41,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 02:55:41,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:41,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622554315] [2023-02-16 02:55:41,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622554315] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:55:41,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:55:41,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-16 02:55:41,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759593697] [2023-02-16 02:55:41,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:55:41,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 02:55:41,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:41,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 02:55:41,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-16 02:55:41,136 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 02:55:41,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:41,192 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2023-02-16 02:55:41,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 02:55:41,193 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2023-02-16 02:55:41,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:41,195 INFO L225 Difference]: With dead ends: 73 [2023-02-16 02:55:41,195 INFO L226 Difference]: Without dead ends: 53 [2023-02-16 02:55:41,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-02-16 02:55:41,197 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 26 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:41,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 252 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:55:41,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-16 02:55:41,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2023-02-16 02:55:41,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 39 states have internal predecessors, (44), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-02-16 02:55:41,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2023-02-16 02:55:41,208 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 34 [2023-02-16 02:55:41,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:41,209 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2023-02-16 02:55:41,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 02:55:41,210 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2023-02-16 02:55:41,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-16 02:55:41,210 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:41,211 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:41,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-16 02:55:41,211 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:41,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:41,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1825803044, now seen corresponding path program 1 times [2023-02-16 02:55:41,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:41,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357891226] [2023-02-16 02:55:41,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:41,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:41,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:41,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 02:55:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:41,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-16 02:55:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:41,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-02-16 02:55:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:41,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:55:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-02-16 02:55:41,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:41,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357891226] [2023-02-16 02:55:41,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357891226] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:55:41,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:55:41,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 02:55:41,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517788929] [2023-02-16 02:55:41,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:55:41,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 02:55:41,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:41,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 02:55:41,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 02:55:41,319 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-16 02:55:41,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:41,373 INFO L93 Difference]: Finished difference Result 104 states and 131 transitions. [2023-02-16 02:55:41,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 02:55:41,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 52 [2023-02-16 02:55:41,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:41,376 INFO L225 Difference]: With dead ends: 104 [2023-02-16 02:55:41,376 INFO L226 Difference]: Without dead ends: 51 [2023-02-16 02:55:41,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-16 02:55:41,380 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 21 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:41,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 169 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:55:41,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-16 02:55:41,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2023-02-16 02:55:41,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 38 states have internal predecessors, (41), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-02-16 02:55:41,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2023-02-16 02:55:41,392 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 52 [2023-02-16 02:55:41,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:41,393 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2023-02-16 02:55:41,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-16 02:55:41,393 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2023-02-16 02:55:41,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-02-16 02:55:41,394 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:41,394 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:41,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-16 02:55:41,394 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:41,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:41,395 INFO L85 PathProgramCache]: Analyzing trace with hash 654757234, now seen corresponding path program 1 times [2023-02-16 02:55:41,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:41,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269264001] [2023-02-16 02:55:41,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:41,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:41,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:41,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 02:55:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:41,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-02-16 02:55:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:41,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-02-16 02:55:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:41,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:55:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:41,487 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-16 02:55:41,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:41,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269264001] [2023-02-16 02:55:41,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269264001] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:55:41,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263286424] [2023-02-16 02:55:41,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:41,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:41,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:41,492 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:55:41,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 02:55:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:41,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 02:55:41,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:55:41,577 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-16 02:55:41,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 02:55:41,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263286424] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:55:41,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 02:55:41,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2023-02-16 02:55:41,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697337727] [2023-02-16 02:55:41,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:55:41,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 02:55:41,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:41,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 02:55:41,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-16 02:55:41,581 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-16 02:55:41,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:41,622 INFO L93 Difference]: Finished difference Result 96 states and 116 transitions. [2023-02-16 02:55:41,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 02:55:41,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) Word has length 53 [2023-02-16 02:55:41,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:41,623 INFO L225 Difference]: With dead ends: 96 [2023-02-16 02:55:41,623 INFO L226 Difference]: Without dead ends: 51 [2023-02-16 02:55:41,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-16 02:55:41,628 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 14 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:41,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 149 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:55:41,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-16 02:55:41,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-02-16 02:55:41,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.135135135135135) internal successors, (42), 40 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2023-02-16 02:55:41,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2023-02-16 02:55:41,639 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 53 [2023-02-16 02:55:41,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:41,640 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2023-02-16 02:55:41,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-16 02:55:41,640 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2023-02-16 02:55:41,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-02-16 02:55:41,641 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:41,641 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:41,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 02:55:41,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:41,848 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:41,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:41,848 INFO L85 PathProgramCache]: Analyzing trace with hash 689204116, now seen corresponding path program 1 times [2023-02-16 02:55:41,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:41,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943712673] [2023-02-16 02:55:41,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:41,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:41,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:41,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 02:55:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:42,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 02:55:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:42,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-16 02:55:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:42,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-02-16 02:55:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:42,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:55:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:42,095 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-16 02:55:42,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:42,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943712673] [2023-02-16 02:55:42,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943712673] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:55:42,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666208159] [2023-02-16 02:55:42,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:42,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:42,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:42,102 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:55:42,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 02:55:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:42,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-16 02:55:42,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:55:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-16 02:55:42,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:55:42,582 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-16 02:55:42,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666208159] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:55:42,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:55:42,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 19 [2023-02-16 02:55:42,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407914024] [2023-02-16 02:55:42,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:55:42,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-16 02:55:42,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:42,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-16 02:55:42,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-02-16 02:55:42,585 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 19 states, 18 states have (on average 5.166666666666667) internal successors, (93), 19 states have internal predecessors, (93), 11 states have call successors, (14), 2 states have call predecessors, (14), 6 states have return successors, (14), 5 states have call predecessors, (14), 11 states have call successors, (14) [2023-02-16 02:55:42,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:42,878 INFO L93 Difference]: Finished difference Result 90 states and 112 transitions. [2023-02-16 02:55:42,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 02:55:42,879 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.166666666666667) internal successors, (93), 19 states have internal predecessors, (93), 11 states have call successors, (14), 2 states have call predecessors, (14), 6 states have return successors, (14), 5 states have call predecessors, (14), 11 states have call successors, (14) Word has length 62 [2023-02-16 02:55:42,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:42,880 INFO L225 Difference]: With dead ends: 90 [2023-02-16 02:55:42,880 INFO L226 Difference]: Without dead ends: 59 [2023-02-16 02:55:42,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 126 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2023-02-16 02:55:42,882 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 90 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:42,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 343 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 02:55:42,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-16 02:55:42,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2023-02-16 02:55:42,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 42 states have internal predecessors, (44), 7 states have call successors, (7), 3 states have call predecessors, (7), 7 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2023-02-16 02:55:42,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2023-02-16 02:55:42,893 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 62 [2023-02-16 02:55:42,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:42,893 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2023-02-16 02:55:42,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.166666666666667) internal successors, (93), 19 states have internal predecessors, (93), 11 states have call successors, (14), 2 states have call predecessors, (14), 6 states have return successors, (14), 5 states have call predecessors, (14), 11 states have call successors, (14) [2023-02-16 02:55:42,894 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2023-02-16 02:55:42,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-02-16 02:55:42,895 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:42,895 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:42,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 02:55:43,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:43,101 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:43,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:43,102 INFO L85 PathProgramCache]: Analyzing trace with hash -729550012, now seen corresponding path program 2 times [2023-02-16 02:55:43,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:43,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936320047] [2023-02-16 02:55:43,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:43,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:43,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:43,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 02:55:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:43,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 02:55:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:43,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 02:55:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:43,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-16 02:55:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:43,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-02-16 02:55:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:43,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:55:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:43,509 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-16 02:55:43,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:43,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936320047] [2023-02-16 02:55:43,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936320047] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:55:43,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155004321] [2023-02-16 02:55:43,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 02:55:43,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:43,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:43,511 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:55:43,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 02:55:43,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 02:55:43,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:55:43,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-16 02:55:43,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:55:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-16 02:55:43,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:55:44,388 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-16 02:55:44,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155004321] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:55:44,390 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:55:44,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 11] total 24 [2023-02-16 02:55:44,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017284936] [2023-02-16 02:55:44,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:55:44,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-16 02:55:44,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:44,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-16 02:55:44,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2023-02-16 02:55:44,397 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand has 24 states, 20 states have (on average 4.85) internal successors, (97), 24 states have internal predecessors, (97), 13 states have call successors, (16), 2 states have call predecessors, (16), 8 states have return successors, (19), 8 states have call predecessors, (19), 13 states have call successors, (19) [2023-02-16 02:55:44,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:44,745 INFO L93 Difference]: Finished difference Result 92 states and 114 transitions. [2023-02-16 02:55:44,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 02:55:44,746 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 4.85) internal successors, (97), 24 states have internal predecessors, (97), 13 states have call successors, (16), 2 states have call predecessors, (16), 8 states have return successors, (19), 8 states have call predecessors, (19), 13 states have call successors, (19) Word has length 71 [2023-02-16 02:55:44,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:44,747 INFO L225 Difference]: With dead ends: 92 [2023-02-16 02:55:44,747 INFO L226 Difference]: Without dead ends: 72 [2023-02-16 02:55:44,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 140 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2023-02-16 02:55:44,748 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 73 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:44,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 336 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 02:55:44,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-02-16 02:55:44,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2023-02-16 02:55:44,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 47 states have (on average 1.127659574468085) internal successors, (53), 50 states have internal predecessors, (53), 8 states have call successors, (8), 3 states have call predecessors, (8), 10 states have return successors, (22), 12 states have call predecessors, (22), 8 states have call successors, (22) [2023-02-16 02:55:44,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2023-02-16 02:55:44,771 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 71 [2023-02-16 02:55:44,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:44,771 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2023-02-16 02:55:44,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 4.85) internal successors, (97), 24 states have internal predecessors, (97), 13 states have call successors, (16), 2 states have call predecessors, (16), 8 states have return successors, (19), 8 states have call predecessors, (19), 13 states have call successors, (19) [2023-02-16 02:55:44,772 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2023-02-16 02:55:44,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-02-16 02:55:44,773 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:44,773 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:44,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 02:55:44,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-16 02:55:44,979 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:44,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:44,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1100264158, now seen corresponding path program 1 times [2023-02-16 02:55:44,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:44,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778619190] [2023-02-16 02:55:44,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:44,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 02:55:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 02:55:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 02:55:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-02-16 02:55:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-02-16 02:55:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:55:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,122 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-02-16 02:55:45,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:45,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778619190] [2023-02-16 02:55:45,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778619190] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:55:45,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:55:45,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 02:55:45,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207233045] [2023-02-16 02:55:45,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:55:45,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 02:55:45,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:45,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 02:55:45,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 02:55:45,126 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2023-02-16 02:55:45,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:45,167 INFO L93 Difference]: Finished difference Result 128 states and 176 transitions. [2023-02-16 02:55:45,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 02:55:45,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 78 [2023-02-16 02:55:45,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:45,169 INFO L225 Difference]: With dead ends: 128 [2023-02-16 02:55:45,169 INFO L226 Difference]: Without dead ends: 66 [2023-02-16 02:55:45,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-16 02:55:45,170 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 10 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:45,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 167 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:55:45,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-02-16 02:55:45,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-02-16 02:55:45,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 47 states have (on average 1.127659574468085) internal successors, (53), 50 states have internal predecessors, (53), 8 states have call successors, (8), 3 states have call predecessors, (8), 10 states have return successors, (20), 12 states have call predecessors, (20), 8 states have call successors, (20) [2023-02-16 02:55:45,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2023-02-16 02:55:45,180 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 78 [2023-02-16 02:55:45,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:45,180 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2023-02-16 02:55:45,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2023-02-16 02:55:45,181 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2023-02-16 02:55:45,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-02-16 02:55:45,182 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:55:45,182 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:45,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-16 02:55:45,183 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:55:45,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:55:45,183 INFO L85 PathProgramCache]: Analyzing trace with hash -862294776, now seen corresponding path program 2 times [2023-02-16 02:55:45,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:55:45,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436314815] [2023-02-16 02:55:45,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:55:45,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:55:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 02:55:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 02:55:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 02:55:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 02:55:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-16 02:55:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-02-16 02:55:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-02-16 02:55:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-16 02:55:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:55:45,592 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-16 02:55:45,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:55:45,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436314815] [2023-02-16 02:55:45,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436314815] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:55:45,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385289460] [2023-02-16 02:55:45,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 02:55:45,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:45,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:55:45,602 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:55:45,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 02:55:45,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 02:55:45,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:55:45,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-16 02:55:45,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:55:45,842 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 4 proven. 60 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-16 02:55:45,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:55:47,264 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 2 proven. 62 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-16 02:55:47,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385289460] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:55:47,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 02:55:47,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 25 [2023-02-16 02:55:47,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143604966] [2023-02-16 02:55:47,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 02:55:47,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-16 02:55:47,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:55:47,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-16 02:55:47,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2023-02-16 02:55:47,269 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand has 25 states, 24 states have (on average 5.166666666666667) internal successors, (124), 25 states have internal predecessors, (124), 15 states have call successors, (22), 2 states have call predecessors, (22), 8 states have return successors, (23), 7 states have call predecessors, (23), 15 states have call successors, (23) [2023-02-16 02:55:47,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:55:47,496 INFO L93 Difference]: Finished difference Result 102 states and 136 transitions. [2023-02-16 02:55:47,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-16 02:55:47,497 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.166666666666667) internal successors, (124), 25 states have internal predecessors, (124), 15 states have call successors, (22), 2 states have call predecessors, (22), 8 states have return successors, (23), 7 states have call predecessors, (23), 15 states have call successors, (23) Word has length 87 [2023-02-16 02:55:47,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:55:47,497 INFO L225 Difference]: With dead ends: 102 [2023-02-16 02:55:47,497 INFO L226 Difference]: Without dead ends: 0 [2023-02-16 02:55:47,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 172 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=240, Invalid=816, Unknown=0, NotChecked=0, Total=1056 [2023-02-16 02:55:47,499 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 85 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:55:47,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 162 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:55:47,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-16 02:55:47,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-16 02:55:47,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 02:55:47,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-16 02:55:47,500 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2023-02-16 02:55:47,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:55:47,500 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-16 02:55:47,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.166666666666667) internal successors, (124), 25 states have internal predecessors, (124), 15 states have call successors, (22), 2 states have call predecessors, (22), 8 states have return successors, (23), 7 states have call predecessors, (23), 15 states have call successors, (23) [2023-02-16 02:55:47,501 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-16 02:55:47,501 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-16 02:55:47,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-16 02:55:47,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-16 02:55:47,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:55:47,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-16 02:55:47,927 INFO L895 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: (and (= |multiple_of_#in~m| multiple_of_~m) (<= |multiple_of_#in~m| 0)) [2023-02-16 02:55:47,928 INFO L899 garLoopResultBuilder]: For program point L32(lines 32 34) no Hoare annotation was computed. [2023-02-16 02:55:47,928 INFO L899 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2023-02-16 02:55:47,928 INFO L899 garLoopResultBuilder]: For program point multiple_ofFINAL(lines 31 45) no Hoare annotation was computed. [2023-02-16 02:55:47,928 INFO L895 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: (and (= |multiple_of_#in~m| multiple_of_~m) (not (<= multiple_of_~n 0)) (= |multiple_of_#in~n| multiple_of_~n)) [2023-02-16 02:55:47,928 INFO L899 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2023-02-16 02:55:47,928 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 31 45) the Hoare annotation is: true [2023-02-16 02:55:47,928 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 43) no Hoare annotation was computed. [2023-02-16 02:55:47,928 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 40) no Hoare annotation was computed. [2023-02-16 02:55:47,928 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (and (= |multiple_of_#in~m| multiple_of_~m) (= |multiple_of_#in~n| multiple_of_~n) (<= (+ multiple_of_~n 1) 0)) [2023-02-16 02:55:47,928 INFO L899 garLoopResultBuilder]: For program point multiple_ofEXIT(lines 31 45) no Hoare annotation was computed. [2023-02-16 02:55:47,928 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 37) no Hoare annotation was computed. [2023-02-16 02:55:47,928 INFO L899 garLoopResultBuilder]: For program point L36-1(line 36) no Hoare annotation was computed. [2023-02-16 02:55:47,929 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (= mult_~m |mult_#in~m|) (not (<= mult_~m 1)) (= |mult_#in~n| mult_~n)) [2023-02-16 02:55:47,929 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2023-02-16 02:55:47,929 INFO L899 garLoopResultBuilder]: For program point L24(lines 24 26) no Hoare annotation was computed. [2023-02-16 02:55:47,929 INFO L899 garLoopResultBuilder]: For program point L21(lines 21 23) no Hoare annotation was computed. [2023-02-16 02:55:47,929 INFO L895 garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: (and (<= |mult_#in~m| 0) (= |mult_#in~m| mult_~m)) [2023-02-16 02:55:47,929 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2023-02-16 02:55:47,929 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-02-16 02:55:47,929 INFO L899 garLoopResultBuilder]: For program point multFINAL(lines 17 28) no Hoare annotation was computed. [2023-02-16 02:55:47,930 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 28) the Hoare annotation is: true [2023-02-16 02:55:47,930 INFO L899 garLoopResultBuilder]: For program point multEXIT(lines 17 28) no Hoare annotation was computed. [2023-02-16 02:55:47,930 INFO L899 garLoopResultBuilder]: For program point L97(line 97) no Hoare annotation was computed. [2023-02-16 02:55:47,930 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-16 02:55:47,930 INFO L895 garLoopResultBuilder]: At program point L97-1(line 97) the Hoare annotation is: (and (= |ULTIMATE.start_is_prime_~n#1| |ULTIMATE.start_main_~n~0#1|) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_main_~n~0#1| 2)) [2023-02-16 02:55:47,930 INFO L899 garLoopResultBuilder]: For program point L97-2(line 97) no Hoare annotation was computed. [2023-02-16 02:55:47,930 INFO L899 garLoopResultBuilder]: For program point L97-4(lines 97 101) no Hoare annotation was computed. [2023-02-16 02:55:47,931 INFO L902 garLoopResultBuilder]: At program point L97-5(lines 76 102) the Hoare annotation is: true [2023-02-16 02:55:47,931 INFO L899 garLoopResultBuilder]: For program point L91(lines 91 95) no Hoare annotation was computed. [2023-02-16 02:55:47,931 INFO L895 garLoopResultBuilder]: At program point is_prime_returnLabel#1(lines 52 54) the Hoare annotation is: (or (= |ULTIMATE.start_is_prime_#res#1| 0) (and (= |ULTIMATE.start_is_prime_~n#1| |ULTIMATE.start_main_~n~0#1|) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_main_~n~0#1| 2))) [2023-02-16 02:55:47,931 INFO L899 garLoopResultBuilder]: For program point L85(lines 85 89) no Hoare annotation was computed. [2023-02-16 02:55:47,931 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-16 02:55:47,931 INFO L899 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2023-02-16 02:55:47,931 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-16 02:55:47,931 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-16 02:55:47,932 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 98) no Hoare annotation was computed. [2023-02-16 02:55:47,932 INFO L895 garLoopResultBuilder]: At program point L53(line 53) the Hoare annotation is: (and (= |ULTIMATE.start_is_prime_~n#1| |ULTIMATE.start_main_~n~0#1|) (<= 1 |ULTIMATE.start_main_~n~0#1|)) [2023-02-16 02:55:47,932 INFO L899 garLoopResultBuilder]: For program point L53-1(line 53) no Hoare annotation was computed. [2023-02-16 02:55:47,932 INFO L899 garLoopResultBuilder]: For program point L78(lines 78 82) no Hoare annotation was computed. [2023-02-16 02:55:47,932 INFO L899 garLoopResultBuilder]: For program point L65(lines 65 72) no Hoare annotation was computed. [2023-02-16 02:55:47,932 INFO L899 garLoopResultBuilder]: For program point is_prime_EXIT(lines 57 74) no Hoare annotation was computed. [2023-02-16 02:55:47,932 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 73) no Hoare annotation was computed. [2023-02-16 02:55:47,933 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 63) no Hoare annotation was computed. [2023-02-16 02:55:47,933 INFO L899 garLoopResultBuilder]: For program point is_prime_FINAL(lines 57 74) no Hoare annotation was computed. [2023-02-16 02:55:47,933 INFO L899 garLoopResultBuilder]: For program point L58(lines 58 60) no Hoare annotation was computed. [2023-02-16 02:55:47,933 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 57 74) the Hoare annotation is: true [2023-02-16 02:55:47,933 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (and (= |is_prime__#in~n| is_prime__~n) (or (and (<= is_prime__~n is_prime__~m) (< 2 is_prime__~n)) (<= (* 2 |is_prime__#in~m|) |is_prime__#in~n|)) (= is_prime__~m |is_prime__#in~m|) (<= 2 is_prime__~m)) [2023-02-16 02:55:47,933 INFO L899 garLoopResultBuilder]: For program point L71-1(line 71) no Hoare annotation was computed. [2023-02-16 02:55:47,933 INFO L895 garLoopResultBuilder]: At program point L68(line 68) the Hoare annotation is: (and (<= |is_prime__#in~n| is_prime__~n) (<= is_prime__~n |is_prime__#in~n|) (= is_prime__~m |is_prime__#in~m|) (<= 2 is_prime__~m) (< 2 is_prime__~n)) [2023-02-16 02:55:47,934 INFO L899 garLoopResultBuilder]: For program point L68-1(line 68) no Hoare annotation was computed. [2023-02-16 02:55:47,934 INFO L899 garLoopResultBuilder]: For program point L68-2(lines 68 70) no Hoare annotation was computed. [2023-02-16 02:55:47,937 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:55:47,939 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-16 02:55:47,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 02:55:47 BoogieIcfgContainer [2023-02-16 02:55:47,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-16 02:55:47,952 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 02:55:47,952 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 02:55:47,952 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 02:55:47,952 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:55:37" (3/4) ... [2023-02-16 02:55:47,955 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-16 02:55:47,960 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure multiple_of [2023-02-16 02:55:47,960 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure mult [2023-02-16 02:55:47,961 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure is_prime_ [2023-02-16 02:55:47,965 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-02-16 02:55:47,965 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-02-16 02:55:47,965 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-16 02:55:47,966 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-16 02:55:48,005 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \result == 0 || ((n == n && 1 <= n) && n <= 2) [2023-02-16 02:55:48,069 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-16 02:55:48,069 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 02:55:48,070 INFO L158 Benchmark]: Toolchain (without parser) took 11559.53ms. Allocated memory was 102.8MB in the beginning and 251.7MB in the end (delta: 148.9MB). Free memory was 45.5MB in the beginning and 221.1MB in the end (delta: -175.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 02:55:48,070 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 102.8MB. Free memory is still 55.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 02:55:48,071 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.09ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 45.4MB in the beginning and 98.8MB in the end (delta: -53.5MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2023-02-16 02:55:48,072 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.09ms. Allocated memory is still 132.1MB. Free memory was 98.8MB in the beginning and 97.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 02:55:48,072 INFO L158 Benchmark]: Boogie Preprocessor took 36.13ms. Allocated memory is still 132.1MB. Free memory was 97.1MB in the beginning and 96.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 02:55:48,072 INFO L158 Benchmark]: RCFGBuilder took 517.60ms. Allocated memory is still 132.1MB. Free memory was 96.0MB in the beginning and 82.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-16 02:55:48,073 INFO L158 Benchmark]: TraceAbstraction took 10539.04ms. Allocated memory was 132.1MB in the beginning and 209.7MB in the end (delta: 77.6MB). Free memory was 82.1MB in the beginning and 167.1MB in the end (delta: -85.1MB). Peak memory consumption was 102.3MB. Max. memory is 16.1GB. [2023-02-16 02:55:48,073 INFO L158 Benchmark]: Witness Printer took 117.42ms. Allocated memory was 209.7MB in the beginning and 251.7MB in the end (delta: 41.9MB). Free memory was 167.1MB in the beginning and 221.1MB in the end (delta: -53.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-16 02:55:48,075 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 102.8MB. Free memory is still 55.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.09ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 45.4MB in the beginning and 98.8MB in the end (delta: -53.5MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.09ms. Allocated memory is still 132.1MB. Free memory was 98.8MB in the beginning and 97.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.13ms. Allocated memory is still 132.1MB. Free memory was 97.1MB in the beginning and 96.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 517.60ms. Allocated memory is still 132.1MB. Free memory was 96.0MB in the beginning and 82.9MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 10539.04ms. Allocated memory was 132.1MB in the beginning and 209.7MB in the end (delta: 77.6MB). Free memory was 82.1MB in the beginning and 167.1MB in the end (delta: -85.1MB). Peak memory consumption was 102.3MB. Max. memory is 16.1GB. * Witness Printer took 117.42ms. Allocated memory was 209.7MB in the beginning and 251.7MB in the end (delta: 41.9MB). Free memory was 167.1MB in the beginning and 221.1MB in the end (delta: -53.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 98]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.5s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 471 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 431 mSDsluCounter, 3331 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2671 mSDsCounter, 210 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1271 IncrementalHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 210 mSolverCounterUnsat, 660 mSDtfsCounter, 1271 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 867 GetRequests, 674 SyntacticMatches, 20 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=11, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 20 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 156 PreInvPairs, 188 NumberOfFragments, 122 HoareAnnotationTreeSize, 156 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 533 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 920 NumberOfCodeBlocks, 920 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1179 ConstructedInterpolants, 0 QuantifiedInterpolants, 3109 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1038 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 24 InterpolantComputations, 8 PerfectInterpolantSequences, 287/540 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: \result == 0 || ((n == n && 1 <= n) && n <= 2) - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-02-16 02:55:48,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE